Checking The Intake Air Temperature Sensor - SELVA MARINE Grey Whale 200 EFI Service Manual

5. Tighten the crank position sensor screws
1, and then check the crank position
sensor air gap. Adjust again if out of
specification.
Crank position sensor screw 1:
4 N·m (0.4 kgf·m, 3.0 ft·lb)
6. Install the wiring harness guide and the
wiring harness guide bolts.
Checking the intake air temperature
sensor
1. Measure the ambient temperature.
2. Connect a computer to the outboard
motor and use the YDIS to display
"Intake temperature."
NOTE:
To connect and operate the YDIS, see Chap-
ter 9, "YDIS" and the YDIS (Ver. 1.23a or
later) Instruction Manual.
3. Check that the difference between the
ambient temperature and the displayed
intake air temperature is within ± 5 °C (±
9 °F).
NOTE:
• Check the intake air temperature sensor
when the engine is cold.
• When checking the intake air temperature
sensor, remove the top cowling and do not
start the engine.
4. Disconnect the intake air temperature
sensor coupler.
6AL3J11
Ignition and ignition control system
5. Turn the engine start switch to "ON," and
then measure the input voltage at the
intake air temperature sensor coupler
(wiring harness end). Check the wiring
harness if out of specification.
Intake air temperature sensor input
voltage (reference data):
6. Turn the engine start switch to "OFF."
7. Remove the intake air temperature sen-
sor.
8. Place the intake air temperature sensor
in a container of water and slowly heat
S6P28270
the water.
9. Measure the intake air temperature sen-
sor resistance. Replace if out of specifi-
cation.
Intake air temperature sensor
resistance:
B
Black/yellow (B/Y) – Black (B)
4.75–5.25 V
at 20 °C (68 °F): 2.21–2.69 kΩ
1
2
B/Y
3
S6AL8450
4
5
6
7
8
S6AL8460
9
8-20